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“Unknown provider: aProvider
...
I'd still love to know how I could have found the place in our source code that caused this issue, but I have since been able to find the problem manually.
There was a controller function declared on the global scope, instead of using a .contr...
bash HISTSIZE vs. HISTFILESIZE?
...tappend is not enabled, commands 41 to 50 are saved to your HISTFILE which now has the 10 commands it held at the beginning plus the 10 newly written commands.
Your HISTFILE is truncated to contain HISTFILESIZE=10 lines.
You now have 10 commands in your history - the last 10 that you just typed in ...
How to play with Control.Monad.Writer in haskell?
...Writer
ghci> let logNumber x = writer (x, ["Got number: " ++ show x])
Now logNumber is a function that creates writers. I can ask for its type:
ghci> :t logNumber
logNumber :: (Show a, MonadWriter [String] m) => a -> m a
Which tells me that the inferred type is not a function that r...
How can I change the version of npm using nvm?
...nce this question was first answered, as noted in a newer answer, there is now a command for this:
nvm now has a command to update npm. It's nvm install-latest-npm or nvm install --latest-npm.
nvm install-latest-npm: Attempt to upgrade to the latest working npm on the current node version
nvm...
Generate a random point within a circle (uniformly)
...gle we just fold any points that appear in ADC back down to ABC along AC.
Now consider a circle. In the limit we can think of it as infinitely many isoceles triangles ABC with B at the origin and A and C on the circumference vanishingly close to each other. We can pick one of these triangles simply...
C multi-line macro: do/while(0) vs scope block [duplicate]
...)
foo(a);
else
bar(a);
where 'foo' and 'bar' are ordinary functions. Now imagine that you'd
like to replace function 'foo' with a macro of the above nature
if (<condition>)
CALL_FUNCS(a);
else
bar(a);
Now, if your macro is defined in accordance with the second approach
(just { and...
How to index into a dictionary?
...f anybody still looking at this question, the currently accepted answer is now outdated:
Since Python 3.7* the dictionaries are order-preserving, that is they now behave exactly as collections.OrderedDicts used to. Unfortunately, there is still no dedicated method to index into keys() / values() of...
JavaScript: Is there a way to get Chrome to break on all errors?
...
Edit: The original link I answered with is now invalid.The newer URL would be https://developers.google.com/web/tools/chrome-devtools/javascript/add-breakpoints#exceptions as of 2016-11-11.
I realize this question has an answer, but it's no longer accurate. Use the l...
How to get the unix timestamp in C#
...
You get a unix timestamp in C# by using DateTime.UtcNow and subtracting the epoch time of 1970-01-01.
e.g.
Int32 unixTimestamp = (Int32)(DateTime.UtcNow.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
DateTime.UtcNow can be replaced with any DateTime object that you woul...
What is the difference between shallow copy, deepcopy and normal assignment operation?
...llow copy:
d = copy.copy(c)
print id(c) == id(d) # False - d is now a new object
print id(c[0]) == id(d[0]) # True - d[0] is the same object as c[0]
Using a deep copy:
d = copy.deepcopy(c)
print id(c) == id(d) # False - d is now a new object
print id(c[0]) == id(d[0]) #...